S3 Whsa it is What it does 13 he LINK- BELT STAIR LIFT What it is What it does XSXcBt & 1babn DESIGNERS ILLUSTRATORS ENGRAVERS Ipbilafrclpbia LINK-BELT STAIR-LIFT INSTALLED J5he LINK-BELT STAIR-LIFT. Mechanical work, whether of man or machine, consists in the moving of material, and mechanical progress is only increase in the rate of movement. In handling inert material, it is well known that the continuous machine will carry far more in a given time than an intermittent apparatus requiring the same power for its operation. Yet it was not until the end of the nineteenth century that serious effort was made to convey people by continuously moving machines. The traveling sidewalk of the Chicago World's Fair was, to the world at large, the first demonstration of their advantage. The setting of this apparatus at an incline between two floors was obviously the next step, and such inclined elevators have been installed in a number of department stores here and abroad. Effort has also been made to replace the one-story elevator by practically detaching from each other the steps of a stair-case, securing them independently and consecutively to an endless chain, and thus e LINK-BELT STAIR-LIFT. producing actual traveling stairs, but the cost, the large amount of space occupied and the difficulty of securing safety at the upper landing constitute formidable objec- tions to this plan. It remained for Mr. James Mapes Dodge, an inventor whose best years have been given to the mechanics of elevating and con- veying, and whose eminence in his profession s equally recognized by the engineering world and the patent office, to present in the Link- Belt Stair-Lift a machine radical in its de- parture from precedent and complete in its fulfillment of all requirements. The existing demand is for a machine which, in department and other large stores and shops, will equalize the value of irst and second floors, and at railroad stations and in other places where large numbers of people are in constant passage from one level to another, provide an absolutely safe and inviting means of making the ascent. 15he LINK-BELT STAIR-LIFT. Such a machine must be continuous in operation, as otherwise free movement of people will be impeded. Large passenger elevators installed in one of the most prom- inent railroad stations in the country show a maximum of seven people per minute during rush hours. A continuously moving machine at the rate of ninety feet per minute will have six or seven times this capacity. This machine must be absolutely safe and convenient for the use of women and children as well as of men; must be strong and durable, since the service is continuous, and must not be interrupted for repairs. It must be economical of space and capable of being harmonized with its surroundings for esthetic reasons. Its first cost must not be out of proportion with the value of its service, nor must the cost of operating be excessive. 15he LINK-BELT STAIR-LIFT. How Completely the Link-Belt St^ir-Lift meets these requirements will appear from the following photographic views used in illustration. V T5he LINK-BELT STAIR-LIFT. The Link-Belt Stair -Lift follows the form of the normal staircase, but in place of the steps themselves a belt is used, comprised of a number of steel links which, when assembled, render flexibility in one direction possible while rigidity is secured in the other. This belt is deflected into level portions cor- responding to the treads of an ordinary \ taw...-» \ V LINK-BELT STAIR-LIFT. \ stairway and into inclined surfaces repre- senting the risers, and furnishes an Absolutely Solid, Secure e^nd Level Footing for passengers during the ascent. J5he LINK-BELT STAIR-LIFT. Its Linked Corvstrviction. makes it possible to run the entire belt around a very small sprocket roller at the head of the Stair- Lift and in close proximity to the dull edge of a plate level with the upper floor and slightly below the highest point attained by the 8 ~ I-IN K IS* I I S I A I W I I * I ( m,v lating I h€ • I r» » LINK-BELT STAIR-LIFT. The treads and risers, after passing around the head roller, again become a flat belt, thus greatly reducing the space required for their return and making the vertical depth of the Stair- Lift but a trifle more than that of an ordinary stairway. I T5he LINK BELT STAIR LIFT This ( tstructlon makes an exceedingly 1 • iurab and safe appara' of I il h that bulldh - of onabi rength can car Ihe machine without the jcesslty of building special foundatior • r It. ■ ;htne: appar and te 'i the movi weight en n self >lle m he Link Belt Stair- L occupies b rt lit space on either floor. Its w ill U , three feet The b coi he steps twenty-( wld experience having shown th rer wldl >ti tot bring increased carrying cap The width of the ps and the ant ol ri prev ove owding and In re m- rt to passeng srysl pis oca avt i le rat ninety I i minir a. \- co O < Hi en O z LU CO < Li_ i DC < CO h UJ CD i 15he LINK BELT STAIR-LIFT. with a passenger on each step, 3000 per hour can be elevated without crowding and without the delays due to waiting for an elevator. A Stair- Lift operating between two floors of a building requires under maximum load but five horse power of electric current. and, as no attendant is needed for loading or lloading passengers, its cost of operation is very low. The Stair-Lift can be stopped instantly from either floor, and may be used as an exit In case of fire or panic. The popularity of the Stair-Lift with women is a great card in its favor. The steps being level and giving as secure footing as the ground, a moving hand-rail is unnecessary and both hands are free, a great and highly appreciated advantage where they are accom- panied by children and carrying parcels. &he LINK BELT STAIR LIFT The Link-Belt Stair-Lift may be in- spected and tested at the works of the Link-Belt Engineering Company. Nicetown, Philadelphia, to which address all communi- cations for the Company should be sent. T5he Stair-Lift Co., £ £ Nicetown ££ PKilendelphia, Pa.